HIGHWAY BONDS. 9 
ing over six market roads assumed uniformly distributed about a 
market center and extending from 1 to 15 miles through a territory 
each acre of which yields the same weight of market products. 
TaBLE 4.—Theoretical average tonnage on each of six uniformly distributed market roads. 
Uniform yield per acre of— 
One-tenth ton. One-fourth ton. One-half ton. 
Maxi-| Aver- 
mum} age Tons hauled Tons hauled Tons hauled 
haul. | haul. per day. per day. per day. 
Total Total Total 
tons per tons per tons per 2 
year. Over | Over year. Over | Over year. Over Over 
first | eighth first | eighth first eighth 
mile mile. mile. | mile. mile. mile. 
1 0. 66 SBE OO fea ee 88.8 Opals lee a Se 167.5 S345 |-ae- = aes 
2 es? 134.0 AQP Eee one 335. 0 00} eee 670. 0 De (Es ees seer 
She 2500 301. 6. (oa eee Sear 754. 0 DEA0 aS ee oe 1, 508. 0 eR nase ee | 
4 2. 67 536. 2 7A ee ee 1,340.5 AL SGU see 2,681.0 Si(dlkc| so see tee 
5 Buoe 837.8 DE eeoeeas 2, 094. 5 GES 7aleceen as ASOSO MW asian eens ee ee 
6 4.00 | 1,206.2 Sis fost aoe ae 3,015. 5 OO ni Ree eos GAOSINON IM 1990 Re 
7 4.67 | 1,642.2 G45} lean Sace 4105355 |lonocn| pee SOMO | P76 WG. ease 
8 5.33 | 2,144.8 eel: O885 |) 25e36250) | le 76 PSI LOS 2440n| soos 52 4,25 
9 6.00 | 2,714.5 9. 00 DD) OntSOn3)| 22: DL 6788 lsSor2s0u|) 40502) |e 13575 
10 OG || Beta ileal: 4.87 | 8,378.0 | 27.82} 12.18 | 16,756.0 | 55.63 | 24.35 
11 7.33 | 4,055.8 | 13.47 7.22 | 10,138.5 | 33.68 | 18.05 | 20,279.0 | 67.35 | 36.10 
12 8.00 | 4,825.7 | 16.04 9.79 | 12,064.3 | 40.10 | 24.48 | 24,128.5 | 80.20] 48.95 
13 8.67 | 5,663.3 | 18.83 | 12.58 | 14,158.2] 47.08 | 31.45 | 28,316.5 | 94.15 | 62.90 
14 9.33 | 6,568.0 | 21.85 | 15.59 | 16,420.08 | 54.63 | 38.98 | 32,840.0 | 109.25 | 77.95 
15 |. 10.00 | 7,540.0} 25.09 | 18.83 | 18,850.0 | 62.73 | 47.08 | 37,700.0 | 125.45 | 94.15 
The average acreage yield in pounds or the acreage coefficient 
varies with the locality. As market roads are usually located 
through farming country, the weight of crops per acre of farm land 
is a good indication of the tonnage originating on market roads. 
The report of the 1910 Census shows an approximate average 
product of 332 pounds per acre of farm land. The average yield 
per acre on improved farm land in crops was 1,674 pounds.2 The 
average weight per acre of forest products on unimproved farm land 
was 122 pounds.’ 
It is found that usually 20 per cent of the roads in any county 
carry nearly all the traffic—possibly 90 per cent of the total. In the 
United States 20 per cent of the total mileage of roads is about 
440,000 miles. There is an average of about 2,000 acres of farm land 
to each mile of such road, which should represent about 65 per cent + 
1 There is a considerable return haul of fertilizer, fuel, kerosene, supplies, wire fence, etc., which can be 
partially determined by thorough inquiry of dealers. 
2 A careful computation of the weight per acre of all marketed crops in Tompkins County, N. Y_., based 
on the data of Bulletin No. 295 of the Cornell Agricultural Experiment Station, gave 0.51 ton per acre of 
land in cultivation, which was 70 per cent of the total farm area and 63 per cent of the totalarea. The acre 
yield for the entire area was, therefore, 0.35 ton. 
3 These figures are derived by determining the weight and acreage of each crop reported and by making 
reasonable assumptions as to distribution in the case of fruits, etc., where acreage was not given. (See 
Table 2.) 
4 The average per cent of lands in farms in 39 States which reported more than 20 per cent of their areas 
in farms in 1910 was $5.16. 
